Scavenged Pre-Chamber Volume Effect on Gas Engine Performance and Emissions
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F19%3A00332253" target="_blank" >RIV/68407700:21220/19:00332253 - isvavai.cz</a>
Result on the web
<a href="https://saemobilus.sae.org/content/2019-01-0258/" target="_blank" >https://saemobilus.sae.org/content/2019-01-0258/</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.4271/2019-01-0258" target="_blank" >10.4271/2019-01-0258</a>
Alternative languages
Result language
angličtina
Original language name
Scavenged Pre-Chamber Volume Effect on Gas Engine Performance and Emissions
Original language description
This work presents development and results of experimental and numerical investigations of an advanced ignition system with a scavenged pre-chamber for a natural gas fueled engine with a bore of 102 mm and stroke of 120 mm. Two combustion concepts are taken into account. The lean burn concept is used to minimize engine out emissions of nitric oxides (NOx) and to achieve high thermal efficiency at low load. The in-house designed scavenged pre-chamber enables the engine to be operated up to the air-excess ratio (lambda) of 2. A stoichiometric (lambda=1) operation is also possible. It is compatible with a three-way catalyst concept, at high load and potentially transient modes and can provide as high as possible engine power density. The influence of the scavenged pre-chamber volume on the combustion and performance within the range of the operational points of the naturally aspirated engine is presented in this paper. The two pre-chambers with different volume (2.2 % and 4.6 % of compression volume) were tested at steady state conditions. Experimental work was complemented with CFD simulations for detailed explanation of the physics inside the main combustion chamber and in the pre-chamber. The 3-D CFD model of the experimental engine was built in AVL Fire software. The size of the pre-chamber was tested as well to verify CFD mode performance versus experimental data. Both mentioned configurations were tested numerically using multi-cycle LES calculations. These results are analyzed in terms of mixture homogeneity, rate-of-heat-release and cycle-to-cycle variability.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20301 - Mechanical engineering
Result continuities
Project
<a href="/en/project/LO1311" target="_blank" >LO1311: Development of Vehicle Centre of Sustainable Mobility</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
WCX SAE World Congress Experience
ISBN
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ISSN
0148-7191
e-ISSN
0148-7191
Number of pages
17
Pages from-to
1-17
Publisher name
SAE International
Place of publication
Warrendale, PA
Event location
Detroit
Event date
Apr 9, 2019
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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